Skip the auto shop - Our mechanics make house calls

Q: Heater not working

asked by on

My air conditioning works really well with no problems or issues and gets cold as it should but when it comes to my heat it does not work it only blows out cool air and never gets warm. So my question is do you know what could cause this issue?

My car has 180000 miles.
My car has an automatic transmission.

Hello. There are usually three potential culprits that cause this issue. First is that the heater core inside the dash is broken or clogged. Second, it could be a problem with the vents from the heater core to the vents on the dash. Third, it may be caused by a heater thermostat in the cooling system that directs warm coolant to power the heater core. Your best bet may be to have a local professional, like one from YourMechanic, inspect the heating system in order to have this corrected in time for winter.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Heater broken

The heater is connected to the air-conditioner by a blend door that moves inside the dash. Depending on where it is located determines whether the air is hot or cold. This blend door is a mechanical component that can break...

Q: How do I use the temperature control?

The temperature control knob is located in the climate control cluster, on the center console. The knob controls how hot or cold the air coming out of your vents is. If you turn the knob counter-clockwise, the air will get...

Q: Transmission in limp mode

The transmission control module (TCM) takes inputs from numerous sensors. It then uses this information to control various transmission related outputs such as shift solenoids and the torque converter clutch. The TCM will go into limp mode when it loses...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...